661-97-2

Basic information

• Product Name: 1,2-DICHLOROHEXAFLUOROPROPANE
• Synonyms: 1,1,1,2,3,3-Hexafluor-2,3-dichlorpropan;1,1,1,2,3,3-Hexafluoro-2,3-dichloropropane;1,2-Dichlor-1,1,2,3,3,3-hexafluorpropan;1,2-Dichlorhexafluorpropan;1,2-dichloro-1,1,2,3,3,3-hexafluoro-propan;1,2-Dichloroperfluoropropane;1,2-Dichlorperfluorpropan;cfc216
• CAS NO: 661-97-2
• Molecular Formula: C₃Cl₂F₆
• Molecular Weight: 220.93
• EINECS: 211-551-3
• Product Categories: CFC;refrigerants
• Mol File: 661-97-2.mol
• Article Data: 17

Chemical Properties

• Melting Point: -124.9°C
• Boiling Point: 33-34°C
• Appearance: /
• Density: 1,304 g/cm3
• Vapor Pressure: 488mmHg at 25°C
• Refractive Index: 1.3035
• CAS DataBase Reference: 1,2-DICHLOROHEXAFLUOROPROPANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-DICHLOROHEXAFLUOROPROPANE(661-97-2)
• EPA Substance Registry System: 1,2-DICHLOROHEXAFLUOROPROPANE(661-97-2)

Safety Data

• Hazard Codes: Xi
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36/37/39
• Hazardous Substances Data: 661-97-2(Hazardous Substances Data)

Usage

General Description

1,2-Dichlorohexafluoropropane is a colourless, non-flammable and chemically stable halocarbon that is widely used as a refrigerant, solvent, and propellant. It is also known by the trade name "R-1216" and has a chemical formula of C3F6Cl2. It is a member of the class of compounds known as chlorofluorocarbons (CFCs), which are notorious for their ozone-depleting properties. Due to concerns about its environmental impact, 1,2-Dichlorohexafluoropropane has been phased out of most uses and is no longer produced in large quantities. However, it is still found in some older refrigeration and air conditioning systems, and its release into the atmosphere is strictly regulated.

InChI:InChI=1/C3Cl2F6/c4-1(6,2(5,7)8)3(9,10)11/t1-/m0/s1

Upstream product

• 116-15-4 perfluoropropylene 
• 431-53-8 1,2-dichlorotetrafluoropropene 
• 3175-64-2 1,1,1,2-tetrachloro-2,3,3,3-tetrafluoropropane 
• 74-99-7 prop-1-yne 
• 677-21-4 1,1,1-trifluoropropylene 
• 431-52-7 1,1,2-trichloro-3,3,3-trifluoropropene 
• 1652-80-8 2,2-dichloro-1,1,1,3,3,3-hexafluoro-propane 
• 7783-56-4 antimony(III) fluoride 
• 7782-50-5 chlorine 
• 75747-56-7 trans-1,2-dichloro-3,3-difluoropropene 
• 75-69-4 trichlorofluoromethane 
• 7664-39-3 hydrogen fluoride 
• 1768-32-7 sulfur bis(trifluoromethyl)amide chloride 
• 13063-43-9 dichloromalononitrile 

Downstream Products

• 116-15-4 perfluoropropylene 
• 431-63-0 1,1,1,2,3,3-hexafluoropropane 
• 359-58-0 1-chloro-1,1,2,3,3,3-hexafluoro-propane 
• 51346-64-6 CF₃CClFCHF₂ 
• 431-89-0 1,1,1,2,3,3,3-Heptafluoropropane 
• 677-56-5 1,1,1,2,2,3-hexafluoropropane 
• 690-39-1 1,1,1,3,3,3-hexafluoropropane 
• 431-87-8 2-chloro-1,1,1,3,3,3-hexafluoropropane 
• 421-48-7 1,1,1,2-tetrafluoropropane 
• 1814-88-6 1,1,1,2,2-pentafluoropropane 
• 55130-03-5 xenon monochloride 

Relevant articles and documents

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PROCESSES FOR THE PRODUCTION OF FLUOROPROPANES AND HALOPROPENES

A process is disclosed for making CF3CF2CH3, CF3CF=CH2 and/or CF3CCI=CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH=CH2 and halopropenes of the formula CX2=CHCH2X, wherein each X is independently F or Cl, with HF and CI2 in a reaction zone to produce a product mixture comprising HF, HCI, CF3CF2CH3, CF3CF=CH2, and CFsCCI=CH2; and recovering the CF3CF2CH3, CF3CF=CH2 and/or CFsCCI=CH2 from the product mixture. Also disclosed is a process for making CF3CH2CHF2, CFsCH=CHF, and/or CFaCH=CHCI. This process involves reacting at least one starting material selected from the group consisting of halopropenes of the formula CX3CH=CH2 and halopropenes of the formula CX2=CHCH2X, wherein each X is independently F or Cl, with HF and CI2 in a reaction zone to produce a product mixture comprising HF, HCI, CF3CH2CHF2, CFsCH=CHF and CF3CH=CHCI; and recovering the CF3CH2CHF2, CFsCH=CHF, and/or CF3CH=CHCI from the product mixture. The molar ratio of HF to the total amount of starting materials fed to the reaction zone for both of these processes is at least stoichiometric, and the molar ratio of Cl2 to total amount of starting material fed to the reaction zone for both of these processes is 2:1 or less.

Preparation of composition containing chromium, oxygen, and either silver or palladium, and their use as catalysts and catalyst precursors

A method for preparing a catalyst composition suitable for increasing the fluorine content in a hydrocarbon or a halogenated hydrocarbon is disclosed. The method involves (a) co-precipitating a solid by adding ammonium hydroxide to an aqueous solution of a soluble trivalent chromium salt and a soluble salt of a modifier metal selected from silver and palladium, that contains at least three moles of nitrate (i.e., NO3?) per mole of chromium (i.e., Cr+3) in the solution and has a modifier metal concentration of from about 0.05 atom % to about 10 atom % of the total concentration of modifier metal and chromium in the solution to form an aqueous mixture containing co-precipitated solid and dissolved ammonium nitrate; and after at least three moles of ammonium hydroxide per mole of chromium in the solution has been added to the solution, (b) drying said aqueous mixture formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume (e.g., air). Also disclosed is a catalyst composition comprising alpha-chromium oxide and a modifier metal selected from silver and palladium prepared by the above method. Also disclosed is a process for increasing the fluorine content in a hydrocarbon or halogenated hydrocarbon in the presence of a catalyst; and processes using a catalyst composition comprising chromium, oxygen and a modifier metal selected from siver and palladium as essential constituent elements (e.g., a catalyst composition prepared by the above process). An azeotropic composition involving CF3CCl═CF2 and HF is also disclosed.